Numerical Simulation of a Gyro-BWO with a Helically Corrugated Interaction Region, Cusp Electron Gun and Depressed Collector

He, Wenlong; Craig, R.; Zhang, Liang; Ronald, K.; Phelps, A. D. R.; Adrian, W.

doi:10.5772/23298

Cited by 13 publications

(4 citation statements)

References 28 publications

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“…Due to these attractive properties there are a number of application for such devices including high resolution RADAR, plasma diagnostics, communications and cloud imaging. Recently Gyro-devices in the form of both a gyro-TWA and gyrotron backward wave oscillator (gyro-BWO) [1] operating in the W-band have been developed at the University of Strathclyde. The design, simulation and experimental results of the gyro-TWA are presented.…”

Section: Introductionmentioning

confidence: 99%

A W-band gyrotron traveling wave amplifier

Donaldson

Zhang

et al. 2013

1st Annual Active and Passive RF Devices Seminar

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A gyrotron traveling wave amplifier (gyro-TWA) with a cusp electron gun and a helically corrugated waveguide operating in the W-band is presented. When driven by an electron beam of energy 40 keV and current 1.5 A, the amplifier is simulated to output 5-10 kW (CW) with a 3 dB frequency bandwidth of 90-100 GHz and saturated gain of 40 dB. Linear analysis, numerical simulation and experimental results will be presented. Introduction:The Gyro-devices are high power coherent microwave sources that excel at high frequencies (up to the terahertz range). The Gyro-devices are suited to high frequency operation due to the fast-wave cyclotron resonance maser instability. Due to these attractive properties there are a number of application for such devices including high resolution RADAR, plasma diagnostics, communications and cloud imaging. Recently Gyro-devices in the form of both a gyro-TWA and gyrotron backward wave oscillator (gyro-BWO) [1] operating in the W-band have been developed at the University of Strathclyde. The design, simulation and experimental results of the gyro-TWA are presented.

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Section: Introductionmentioning

confidence: 99%

A W-band gyrotron traveling wave amplifier

Donaldson

Zhang

et al. 2013

1st Annual Active and Passive RF Devices Seminar

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“…Helically corrugated waveguide interaction regions [2–9] radically alter the dispersion relation of the interacting mode such that it matches the electron beam dispersion [10] over a range of up to 20% of the centre frequency. Recent studies [11–16] have concentrated on broadband applications and as a consequence these studies have required high‐frequency waveguide components with performance optimised for broadband, high‐power operation. One of these components is the elliptical converter (used to generate circular polarised radiation from linear [17]).…”

Section: Introductionmentioning

confidence: 99%

Circular polariser for use in a gyro‐travelling wave amplifier

Robertson

Young

Ronald

et al. 2013

IET Microwaves, Antennas & Propagation

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A corrugated rectangular waveguide, commonly used in radio frequency antennas applications, was considered for use in a gyro-TWA experiment. This waveguide transducer produced broadband circularly polarised radiation in the Ka-band frequency range (26??40 GHz). Computer simulations, using computer simulation technology Microwave Studio??, were carried out and predicted return losses exceeding 30 dB and a 6° phase variation for 20% bandwidth centred at 31 GHz. Comparison between experimental measurements and simulations showed good agreement. The performance of this polariser was also compared to that of a conventional elliptical converter. Owing to its broadband performance the authors consider some of the technical aspects of applying this component to a Ka-band gyro-TWA experiment

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“…The gyro-devices [1][2][3][4][5] are high power coherent microwave sources that excel at high frequencies (up to terahertz range). They operate in a vacuum, usually ultra high vacuum (UHV), to facilitate the transport of the electron beam.…”

Section: Introductionmentioning

confidence: 99%